MRHS

MRHS may refer to:

United States high schools

 * Mountain Ridge High School (Maryland), Frostburg, Maryland
 * Mountain Ridge High School (Arizona), Glendale, Arizona
 * Mountain Ridge High School (Utah), Herriman, Utah
 * Manchester Regional High School, Haledon, New Jersey
 * Marriotts Ridge High School, Marriottsville, Maryland
 * Minnechaug Regional High School, Wilbraham, Massachusetts
 * Monmouth-Roseville High School, Monmouth, Illinois
 * Mesa Ridge High School, Colorado Springs, Colorado

Other uses

 * Member of the Royal Horticultural Society